Oil Level

Messages
74
Location
Malaysia
How many of you keep your oil level at "Max" (dipstick marking)? Some say it's better to keep it slightly below "Max", somewhere between the halfway mark between "Min" - "Max" and "Max". Comments?
 
Messages
3,398
Location
Midwest, Illinois
Right at full, slightly over. My line of thinking is 4 kids in a kiddie pool get if filthy pretty quick. Those same 4 kids wouldn't make a dent in an olympic sized pool. The larger the volume of fluid, the more than any input is spread out: fuel soot, heat, whatever. In some cars, the difference between min and max is a quart. In a 4 quart system, thats 25%...a major difference.
 
Messages
2,500
Location
Dallas, Texas
I have noticed, at least in my 2002 Ford Taurus with 148k miles, that their is more burn off towards the top of the "fill" mark. Then as it gets to the middle of the dip stick it slows and stops. I am beginning to think that the car really likes closer to 4.5 quarts, that last pint just gets burned over the first 3,000 miles of the OCI. This is a series of experiments I have yet to do.
 
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1,469
Location
PA
I always keep it at max, just like my other fluids. Anyone know what the advantage of having it in the middle if your car burns no oil?
 
Messages
25,045
Location
ON, Canada eh?
 Originally Posted By: insomniac
How many of you keep your oil level at "Max" (dipstick marking)? Some say it's better to keep it slightly below "Max", somewhere between the halfway mark between "Min" - "Max" and "Max". Comments?
I keep it just over the Max line for all my fluids and they never move until I change them out...
 
Messages
6,359
Location
New Braunfels
I keep mine of Max full. I like the reserve for long trips or when my wife is about to depart a a 4k mile road trip I just changed the oil and filled it to Max(knowing that she won't open the hood once in this cross country drive). When she comes home I will check the oil kevel and top it off to Max to finish up the OCI if it is needed.
 
Messages
37
Location
NYC
 Originally Posted By: qship1996
I keep the oil filled to the very top of the oil cap!
I know one guy back in high school who did that. Needless to say the motor went south right after that. LOLOL People ripped on him till we graduated.
 
Messages
9,385
Location
Canuck living in California
I keep all my fluids to the max line as well. Currently my engine oil is slightly over max, as I had a 4.4L jug and my car takes 4.3L, I dumped it all in, what would I do with 0.1L of oil? My car doesn't burn any oil (looking at oil level shown on the dipstick).
 
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Messages
19,479
Location
Chicago Area
Like many of us, my cars don't burn oil enough to measure. So the level stays at the top. The only advantage to running lower oil leveles is less drag by the crank and rods . And this is only a possibility, not something we can count on every time.
 

insomniac

Thread starter
Messages
74
Location
Malaysia
 Originally Posted By: qship1996
I keep the oil filled to the very top of the oil cap!
Do you wear your underwear on the outside, too?
 

insomniac

Thread starter
Messages
74
Location
Malaysia
 Originally Posted By: sciphi
To the "full" mark, or slightly over for my automatic transmission. It shifts better with the extra fluid in there.
Shifts better? Really? Going beyond “Max” is overfilling, and it can cause foaming and sluggish trans performance. It doesn’t make sense to me, “Max” means exactly what it means, “Maximum”...i.e. the limit/ceiling, don’t go beyond.
 
Messages
6,987
Location
Michigan
While it would make sense to always keep it at the max level if possible, I usually add a qt when it gets to the add mark.
 
Messages
9,427
Location
Pensacola & Vero Beach FL
You also have to consider the vehicle. The gas engine in the Prius, for example, is known to be sensitive to even slight overfilling, and many on the Prius boards feel that a few ticks below FULL is the optimum level. I've also heard that the GM Northstar V-8 is similarly sensitive (but I have no idea about the value of that info). I think it's safe to say that for the vast majority of the motoring public, shooting for the full line is the safest approach. For certain groups, however, a different strategy may be warranted. When in doubt, learn more.
 
Messages
4,252
Location
Central Wisconsin
" shooting for the full line is the safest approach" Correctamundo. There are a few engines, or individual engines among an engine family that seem to seek a level about a 1/2 qt low. Add to the full, it'll burn that half a qt. Leave it there and it won't burn anymore than that. Odd, but it happens.
 
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